Is Facebook…psychic? Have you ever been swiping through the latest collection from your favorite fashion brand, adding items to your wish list or cart that you hope to buy on your next payday, and then later that week, when you’re on Facebook, see an ad for that exact same piece you had your eye on? It might be spooky, but it’s not ESP. It’s not voodoo, and it’s not serendipity. The universe...